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6. À¯Áö º¸¼ö

Ç×»ó ¿Ã¹Ù¸¥ ÀÛµ¿À» À§ÇØ (Keeping it working).

named°¡ ½ÇÇàµÇµµ·Ï À¯ÁöÇÏ´Â °Í ¿Ü¿¡ Ç×»ó À¯³äÇØ¾ß ÇÏ´Â °ÍÀÌ ÀÖ´Ù. root.hints ÆÄÀÏÀ» ÃÖ½ÅÀÇ °ÍÀ¸·Î À¯ÁöÇÏ´Â °ÍÀÌ´Ù. Á¦ÀÏ ½¬¿î ¹æ¹ýÀº dig¸¦ »ç¿ëÇÏ´Â °ÍÀÌ´Ù. ¸ÕÀú ¾Æ¹«·± ¾Æ±Ô¸ÕÆ® ¾øÀÌ dig¸¦ ½ÇÇàÇÑ´Ù. ±×·¯¸é ¹Ù·Î ¼­¹ö¿¡ µû¶ó¼­ ¾à°£Àº ´Ù¸¥ root.hints¸¦ ¾òÀ» °ÍÀÌ´Ù. ±×·± ´ÙÀ½ dig @rootserver·Î ³ª¿­µÈ ·çÆ® ¼­¹ö Áß ÇÑ°÷¿¡ ¿äûÇÑ´Ù. root.hints¿Í À¯»çÇÑ ²ûÂïÇÑ °á°ú¸¦ ¾ò°Ô µÉ °ÍÀÌ´Ù. °á°ú¸¦ ÆÄÀÏ·Î ÀúÀåÇÏ°í(dig @e.root-servers.net . ns >root.hints.new) ¿¹ÀüÀÇ root.hints¿Í ´ëü½ÃŲ´Ù.

ij½¬ ÆÄÀÏÀ» ´ëüÇÑ ÈÄ¿¡´Â ¹Ýµå½Ã named¸¦ Àç½ÃÀÛÇϵµ·Ï ÇÏÀÚ.

Al Longyear¾¾°¡ root.hints¸¦ ÀÚµ¿À¸·Î °»½ÅÇÒ ¼ö ÀÖ´Â ¾Æ·¡ ½ºÅ©¸³Æ®¸¦ º¸³» ÁÖ¾ú´Ù. crontab¿¡ ³Ö¾î¼­ ÇÑ´Þ¿¡ Çѹø²Ã·Î ½ÇÇàµÇµµ·Ï Çصθé Àؾ µÈ´Ù. ÀÌ ½ºÅ©¸³Æ®¿¡¼­´Â ¿©·¯ºÐÀÇ ¸ÞÀÏÀÌ ÀÛµ¿ÇÏ°í ÀÖ°í ¸ÞÀÏ ¾Ë¸®¾Æ½º `hostmaster'°¡ Á¤ÀǵǾî ÀÖ´Ù°í °¡Á¤ÇÑ´Ù. ¿©·¯ºÐ¿¡°Ô ¸Â°Ô °íÃÄ¾ß ÇÑ´Ù.


#!/bin/sh
#
# Update the nameserver cache information file once per month.
# This is run automatically by a cron entry.
#
# Original by Al Longyear
# Updated for bind 8 by Nicolai Langfeldt
# SERVFAIL problem discovered by David A. Ranch
#
(
 echo "To: hostmaster <hostmaster>"
 echo "From: system <root>"
 echo "Subject: Automatic update of the named.conf file"
 echo

 export PATH=/sbin:/usr/sbin:/bin:/usr/bin:
 cd /var/named

 dig @rs.internic.net . ns >root.hints.new

 case `cat root.hints.new` in
   *SERVFAIL*)
        echo "The named.conf file update has FAILED."
        echo "This is the error that DIG reported:"
        echo
        cat root.hints.new
        exit 0
 esac

 echo "The named.conf file has been updated to contain the following   
information:"
 echo
 cat root.hints.new

 chown root.root root.hints.new
 chmod 444 root.hints.new
 rm -f root.hints.old
 mv root.hints root.hints.old
 mv root.hints.new root.hints
 ndc restart
 echo
 echo "The nameserver has been restarted to ensure that the update is complete."
 echo "The previous root.hints file is now called   
/var/named/root.hints.old."
) 2>&1 | /usr/lib/sendmail -t
exit 0

¿©·¯ºÐ Áß ¸î¸îÀº ftp·Î Internic¿¡¼­ root.hints ÆÄÀÏÀ» °¡Á®¿Ã ¼ö ÀÖ´Ù°í ²¿Áý¾î ¸»ÇÒÁöµµ ¸ð¸¥´Ù. ftp·Î root.hints¸¦ °»½Å ÇÏÁö ¸»¶ó. À§ÀÇ ¹æ¹ýÀÌ ³×Æ®¿÷¿¡ ´õ¿í Ä£±ÙÇÏ´Ù.


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